Evolution

This is based on an individuals opinion, since this question is a very biased and opinionated question. Some people think that pigs are ugly because they believe they are dirty, since they like to roll around in mud and use their powerful noses to root around in the dirt. These same people also believe that pigs are ugly because they have almost no neck, are short, squat and fat, etc. But there are others who don't think pigs are ugly, because they see that pigs are, in reality, clean animals since they defecate and urinate in a spot away from their feeding and resting area, and they cool themselves in the mud because they have no other ways of cooling themselves, and that pigs are just as smart as a dog, if not smarter.

So all in all, this question is based on one's opinion and only that.

Well, if you look at the skeleton of a modern bird, you will see that it has many similarities with small bipedal theropods such as Coelurus and Compsognathus. For examle, many theropods have hollow bones and even wishbones, a unique feature to birds. Also many species are covered head to toe in feathers! The unique fossilization process that allows such detail to be preserved is found the most in Liaoning, China, where most of the known feathered dinosaurs have been found. My theory is that a small, possibly tree living Coelurosaurid theropod branched out into the group Paraves (Eumaniraptora), the family that includes birds and Deinonychosaurs such as Velociraptor. All this group are very similar anatomically. The first certain bird, Archaeopteryx, shared many features with both birds and dinosaurs. It is used for the basis for bird evolution, and although another, Protoavis, evolved earlier, it is not yet agreed to be a true bird and is thought to be a chimera (Mix of two or more animals fossilized together and viewed as the same creature)

Fossils are preserved remains or imprints of organisms that are formed in rock layers. When an organism dies, sediments may form on top of it, burying and preserving it. Another organism may die on top of it and also be buried. Eventually, many different rock layers (also known as strata) are formed with fossils inside them. So we can say that the lower the strata, the older the rock and fossil. The higher the strata, the younger the fossil. This is because new rocks and fossils form on top of older ones. When studying the fossils found in different strata, scientists found that the older ones were a lot more simpler. This means that fossils formed millions and millions of years ago were once very simple organisms. As they observed fossils higher up in the different strata, they noticed that there were similar fossils but they were a little bit more developed and complex. The newest fossils found resembles organisms that exist today. This shows that organisms were once very simple, but, with time, became more complex and better suited for survival in particular conditions. This is known as evolution.

The fossil record is only one of many types of evidence for evolution.

There are a few critical distinctions between humans and apes:

Humans walk upright, apes are generally knuckle walkers (they walk on all fours but on the knuckles of the hands).

Humans can hold their breath. No ape can do that - this is to do with the way the tubes in the throat are arranged and it also means that it possible for humans to talk - the downside is that food can "go down the wrong way".

Humans have much less hair - they are practically naked.

Unfortunately, these important differences are not the kind of thing that fossilise well - apart from the walking upright. The well known Lucy fossil was an upright walker, but, of course, it's difficult to explain why a creature started walking upright apart from the vague "there was an environmental advantage".

There is a theory that explains pretty much all of these; that early hominids spent a period as "aquatic apes" - this would explain why we can hold our breath, lost our body hair and - more tentatively - why we walk upright. The only problem with the theory is that there is no fossil evidence to support it.

Another answer--The evidence is that humans and apes shared a common ancestor, not that they evolved from apes.

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The difficulty is tracing the lineage stems from not just body details failing to leave fossils. The Quaternary land animals generally - including our ancestors - left far fewer good fossils than sea creatures. Notably, our own species is poorly defended physically from animal attacks or extreme weather, and poorly equipped bodily to hunt and kill live prey. We had to develop an intellect and vocal skill some orders of magnitude higher than those of any other animal so we could overcome these weaknesses by brain rather than brawn.

They are synthesized in plasmids and modified in the endoplasmic reticulum.

Tyrannosaurus belonged to the clade Coeluosauria. Coelurosauria includes birds, maniraptorans, and Tyrannosaurs. However, birds did not descend from Tyrannosaurus or any of its immediate relatives.

Some still have embedded pelvises under a good bit of blubber.

From hunting and deforestation. Some farmers think that harpies could be a threat to livestock, and so they are shot quite a bit in the jungle. They have now gone extinct from most of Mexico and Paraguay.

Sharp teeth make a seal better able to hold onto its catch of fish (which can be very slippery when they wish).

It would either have to be a hexagon or an octagon. I'm not a hundred percent sure.

Isolation often leads to speciation, because as each isolated population evolves new characteristics, the separate populations eventually get DNA that is too different for the two to breed and have fertile offspring (this is the point when speciation has occurred). In the case that there is not isolation, the whole species must slowly evolve until it becomes a new species. However, here the line between where the speciation actually occurred becomes blurry, because it doesn't happen in a single generation.

Actually, this would be bacteria, because it is how all organisms start out and eventually, they will evolve into the animals and plants we know today. However, humans did not come about until around after the Ice Age, along with the first mammals.

because their ancestors stretched their necks reaching for food

Of course. Every living thing has a common ancestor. Humans and flies are both in the animalia kingdom.

The needles are the leaves of the tree, which allow it to carry out photosynthesis and produce food

for eating different kinds of food

The fossil record, comparative anatomy, molecular genetic and molecular cell biology, genetics, evolutionary development and evolutionary biology to name several disciplines with evidence for evolution and it's processes.

Go here.

talkorigins.org

By natural selection. These organisms have variations that allow some to survive and reproduce better than other organisms. The ones that do reproduce better leave more copies of their genes in the populations gene pool. This is the definition of evolution; evolution is the change in allele frequency over time in a population of organisms.

Baboons belong to a part of the primate family called "Old World Monkeys" and Chimpanzees belong to a part called "Hominidae" (or the Great Apes). Both Hominindae and Old World Monkeys share a common ancestor, but after that the families branch off and continue on separate evolutionary paths. Baboons and Chimpanzees are very distant relatives, and neither one evolved from the other.

They serve as a suicidal bags in the cell. they eat/kill the foreign anti-bodies who enters the cell.

Evolution is the change in allele frequency over time in a population of organisms. Mutation and natural selection, the nonrandom survival and reproduction of randomly varying organisms, are the main drivers of evolution. Genetic drift, a sampling error and gene flow between populations of the same species also can cause evolution, but, generally, in small populations.

Giant isopods communicate by sending little water waves through the water.

hominids